What Happens When Heroes Become Mice?
Begin in the human world, enter Portal Lake, and defend Braeford.
The campaign begins as existing adventurers become mice, enter Portal Lake, and defend Braeford while searching for the stolen Stellar Keystone.
The Adventure Begins
The Stellar Keystone has been stolen.
A sacred relic capable of opening portals between worlds has vanished from the human realm. The trail leads somewhere impossible: a hidden world inhabited by mice, predators, forgotten gods, and dangers far larger than anything the party has faced before.
To continue the pursuit, the adventurers must undergo a miraculous transformation and enter Portal Lake as mouse-sized versions of themselves.
What begins as a simple recovery mission soon becomes a struggle for survival as the party arrives in the hamlet of Braeford, a community threatened by rat raiders, predators, and mysteries lurking beyond the safety of its walls.
Welcome to Braeford
Braeford serves as the party's introduction to life in the mouse world. Here they will meet new allies, learn the dangers of their transformed existence, and discover that even a short journey can become a major expedition when measured in mouse-sized footsteps.
From hidden trails and wilderness encounters to village intrigue and desperate defenses, the adventure introduces the themes and dangers that define the larger Perils of Portal Lake campaign.
A Different Kind of Fantasy Adventure
When you stand only inches tall, everything changes.
Cats become monsters. Hawks become dragons of the sky. Streams become rivers. Grass becomes forest. Success depends less on raw strength and more on caution, ingenuity, exploration, and clever decision making.
Designed for classic AD&D and OSR-style play, this adventure rewards scouting, negotiation, preparation, and player creativity.
The First Chapter of a Larger Journey
A Miraculous Mousey Metamorphosis! serves as the opening chapter of the Perils of Portal Lake campaign, but can also be run as a stand-alone adventure or inserted into an existing fantasy campaign as a strange and memorable side quest.
Released: 31 July 2026
